RU2771013C1 - Pulse electrodynamic emitter - Google Patents

Abstract

FIELD: power generation.SUBSTANCE: invention relates to apparatuses for generating seismic energy and can be used in seismic surveying of water areas. Substance: pulse electrodynamic emitter comprises a tightly sealed body configured to be secured on a carrier (16), e.g., an autonomous uninhabited apparatus. The sealed body includes a tightly sealed emitter module (1) and a tightly sealed emitter control module (2). The tightly sealed emitter module (1) is made in the form of an oval cylinder with a tightly sealed shell, and is equipped with a frame configured for plates and elastic elements with stiffening ribs to be secured therein. Also placed inside the tightly sealed module (1) are a rigid element, an elastic liner, an insulator, an excitation coil made in the form of an excitation winding. Located in the tightly sealed emitter control module (2) are a storage capacitor unit with a charging apparatus, an electronic control cabinet, an accumulator battery unit.EFFECT: possibility of using the apparatus in difficult ice and wave conditions, in hard-to-reach water areas, and in the northern sea areas.9 cl, 4 dwg

Description

The invention relates to devices for conducting geophysical exploration of minerals in the aquatic environment and can be used in offshore seismic exploration for oil and gas year-round in water areas, both without ice cover and covered with ice.

A known method of excitation of seismic vibrations and a device for its implementation (patent RU No. 2381528 C2, publ. 10.02.2010, IPC: G01V 1/02), based on the use of repulsive forces arising in the energy converter. The device that implements the claimed method comprises an energy converter, a base that is a base plate and transmits impulses of repulsive forces that occur in the energy converter when the main current pulse is applied to the medium under study, a sealed cylindrical body fixed to the base of the emitter, guide racks, an electrodynamic weight and an electrodynamic shock absorber. The working part of the device under consideration is an electrodynamic energy converter installed in the radiator housing, consisting of two electrodynamic elements in the form of a solenoid and a disk, one of the elements being rigidly fixed to the radiator base, and the other having the ability to freely move in a vertical direction relative to the first one. Energy in the form of a powerful current pulse is supplied to the solenoid, and in the electrodynamic converter it is converted into a repulsive force pulse. The force impulse is transmitted to the soil through the base of the emitter, rigidly connected to one of the electrodynamic elements, exciting elastic oscillations in it. As a result of repulsive forces, the upper electrodynamic element with the weight moves up along the guide posts, and the reaction of the lower electrodynamic element is converted into a force impulse, which is transmitted through the base of the emitter to the ground, exciting elastic vibrations in it. When the electric impulse stops, the magnetic and electric fields disappear and the movable electrodynamic element returns to its original position under the influence of gravitational forces. To partially damp the parasitic kinetic energy of the moving element of the electrodynamic converter and prevent parasitic shock that distorts the seismogram, the design of the emitter provides for an electrodynamic weight and an electrodynamic shock absorber operating on the same principles as the electrodynamic energy converter.

The disadvantage of this source is the need to use a heavy weight, such a design does not provide for the possibility of using the emitter in marine seismic when the source is placed in the water column.

A universal non-explosive pulsed electrodynamic seismic source for transit zones is known (patent RU No. 2714046, publ. 12.02.2020, IPC: G01V 1/02) taken as a prototype, containing a sealed housing with a bottom made of steel, inside of which there is a rigid plate-emitter of seismic waves, on the upper surface of which the first excitation coils are placed, made in the form of a copper spiral, while insulating plates are supported on the emitter plate, in the groove on the lower surface of which the second excitation coils adjacent to the first excitation coils are placed, the leads of which are connected to the storage unit capacitors and their charger, and an electronic control cabinet, and on each plate there is a weight with a linear bearing with the ability to move the weight along the guide pipe installed on the emitter plate, while a damper is placed inside the pipe, and the housing is made with the possibility of placing a mounted float systems.

The disadvantages of such a device include limited areas of application, the impossibility of stable operation of the emitter using a float system, when placed in the water column at a depth of 5-8 meters, with the equipment that ensures its operation (charger and electronic control cabinet) located on the surface of the water (on watercraft), in marine seismic exploration with complex wave and ice conditions.

The objective of the invention will allow to achieve a new technical result - increasing the efficiency of operation by expanding the possibility of its use in difficult climatic conditions associated with severe ice and wave conditions in hard-to-reach water areas, as well as areas of the northern seas of the Arctic shelf. Additionally, the technical result of the invention is to give the electrodynamic emitter and equipment that ensures the operation of the emitter, zero buoyancy for the use of the emitter both from a surface carrier vessel and on an underwater carrier vessel or autonomous uninhabited underwater vehicle.

The task of a pulsed electrodynamic emitter containing a sealed housing, an excitation coil, a block of storage capacitors and their charger, and an electronic control cabinet, is achieved by the fact that the sealed housing is made in the form of separate modules, a sealed emitter module, and at least one sealed module emitter control, moreover, the sealed module of the emitter is made in the form of an oval cylinder and is provided with a frame, made with the possibility of fixing in it at least one plate and at least one elastic element, in turn, equipped with at least one stiffening rib, as well as a sealed module the emitter is equipped with a rigid element, an elastic gasket, an insulator, a sealed shell, and an excitation coil placed in it made in the form of an excitation winding, and in the sealed control module of the emitter there is a block of storage capacitors with their charger, an electronic control cabinet pressure control module made in the form of an automatic control unit for the emitter, also the sealed emitter control module is equipped with a battery pack, and the sealed emitter module and the sealed emitter control module are designed to be mounted on a carrier, for example, an autonomous uninhabited underwater vehicle.

Also, the frame and plate are made of a material with high electrical conductivity.

The elastic element is made of a polymeric material.

The rigid element is made of a material with high strength and buoyancy.

The elastic gasket is made of polymeric material.

The excitation winding is made of cable.

The insulator is made of insulating material.

The sealed shell is made of a viscoelastic material.

The sealed emitter module, made in the form of an oval cylinder, is made in the form of an elliptical cylinder.

The essence of the claimed invention is illustrated by drawings, where:

in fig. 1 - an isometric diagram showing the appearance of a pulsed electrodynamic emitter, consisting of a sealed emitter module and a sealed emitter control module fixed on a carrier;

in fig. 2 is an isometric diagram showing the appearance of a sealed emitter control module with equipment;

in fig. 3 is an isometric diagram showing the shape of the hermetically sealed emitter module. A cutout is made on the diagram to display the composition of the elements of the sealed emitter module.

in fig. 4 is a cross-sectional diagram of the sealed emitter module showing the composition of the elements of the sealed emitter module.

The pulsed electrodynamic emitter (Fig. 1, 2, 3, 4) is made in the form of separate modules, a sealed emitter module 1 (Fig. 1, 3), and at least one sealed emitter control module 2 (Fig. 2), moreover sealed emitter module 1 is made in the form of an oval cylinder and is provided with a frame 3, made with the possibility of fixing in it at least one plate 4 and at least one elastic element 5, in turn, equipped with at least one stiffening rib 6, as well as sealed the emitter module 1 (Fig. 3) is equipped with a rigid element 7, an elastic gasket 8, an insulator 9, a sealed shell 10 and an excitation coil placed in it made in the form of an excitation winding 11, and in the sealed control module emitter 2 (Fig. 2) there is a block storage capacitors 12 with their charger 13, an electronic control cabinet made in the form of an automatic control unit for the emitter 14, also a sealed emitter control module Lem 2 is equipped with a battery pack 15, as well as a sealed emitter module 1, and a sealed emitter control module 2, made with the possibility of mounting on a carrier 16, for example, an autonomous uninhabited underwater vehicle.

The frame 3 and the plate 4 are made of a material with high electrical conductivity.

The elastic element 5 is made of a polymeric material.

The rigid element 7 is made of a material with high strength and buoyancy.

The elastic gasket 8 is made of a polymeric material.

The excitation winding 11 is made of cable.

The insulator 9 is made of an insulating material.

The sealed shell 10 is made of a viscoelastic material.

Sealed emitter module 1, made in the form of an oval cylinder, is made in the form of an elliptical cylinder.

The pulsed electrodynamic emitter works as follows:

The hermetic emitter module 1 and the hermetic emitter control module 2 are installed on the carrier 16 at its location. The carrier 16 may be an autonomous underwater vehicle, underwater or surface vessel. The area of seismic research for the operation of a pulsed electrodynamic emitter can be both free of ice and covered with ice all year round.

The operation of the pulsed electrodynamic emitter as a whole occurs from charging the block of storage capacitors 12 using their charger 13 located in the sealed control module of the emitter 2. The power supply of the charger 13 for charging the block of storage capacitors 12 can be carried out both from the battery pack 15 and from the system carrier power supply 16.

Further, the operation of the pulsed electrodynamic emitter is carried out automatically using the automatic control unit of the emitter 14, depending on the given mission of seismic research in the seismic technology used (2D, 3D, 4D seismic) in the area necessary for the study.

The automatic control unit of the emitter 14 ensures the periodic supply of electrical energy, a powerful current pulse, for the operation of the sealed module of the emitter 1.

In the hermetic emitter module 1, a powerful current pulse enters the excitation winding 11, which causes a strong magnetic field between the excitation winding 11 and the plates 4 fixed in the frame 3. Under the influence of a strong magnetic field, forces arise between the electrodynamic elements of the excitation winding 11 and the plates 4 isolated by the insulator 9 repulsion, thereby creating a powerful impulse with a period of several milliseconds. Since the excitation winding 11 is made of a material with high electrical conductivity, with a small relative elongation, then at the moment of repulsion forces of the excitation winding 11 from the plates 4, elastic elements 5 equipped with stiffeners 6 come into operation. The work of the elastic elements 5 is to accept the load from the excitation winding 11 compressing the elastic elements 5 during the creation of a powerful impulse. To evenly distribute the load compressing the elastic elements 5, there are stiffeners 6. After removing the load from the elastic elements 5, the elastic elements 5 take their original shape.

Also, when repulsive forces occur between the plate 4 and the excitation winding 11, in which the excitation winding 11 is repelled from the plates 4, reverse forces act, pressing the plates 4 to the frame 3. To counteract the reverse forces, an elastic gasket 8 and a rigid element 7 are provided in the design. Elastic gasket 8 softens the action of the reverse forces pressing the plates 4 to the frame 3, acting on the rigid elements 7 to prevent their destruction. In turn, the rigid elements 7 counteract the displacement of the plates 4 towards the frame 3, and also provide zero buoyancy, filling the entire internal volume of the sealed emitter module 1.

Additionally, the sealed emitter module 1 is covered with a sealed shell 10 made of a viscoelastic material. The hermetic shell 10 enveloping the excitation winding 11 takes the geometric shape of the excitation winding 11, both in the initial state of the excitation winding 11, and the geometrically deformed form of the excitation winding 11, at the moment of creating a powerful pulse. Also, the hermetic shell 10 protects the hermetic module of the emitter 1 from the outboard environment.

Additionally, the hermetic emitter control module 2 can be trimmed and equipped with a calculated ballast to impart zero buoyancy to the pulsed electrodynamic emitter as a whole.

In general, since the pulsed electrodynamic emitter is given zero buoyancy, and the powerful impulse it gives out is equally directed in two directions (up and down) relative to the axis of the pulsed electrodynamic emitter, when installed on the carrier 16, for example, an autonomous uninhabited underwater vehicle, the carrier 16 during operation pulsed electrodynamic emitter will not be destabilized in the water column during its movement.

Thus, a pulsed electrodynamic emitter will achieve a new technical result - an increase in operating efficiency by expanding the possibility of its use in difficult climatic conditions associated with severe ice and wave conditions in hard-to-reach water areas, as well as areas of the northern seas of the Arctic shelf. Additionally, the technical result of the invention is to give the electrodynamic emitter and equipment that ensures the operation of the emitter, zero buoyancy for the use of the emitter both from a surface carrier vessel and on an underwater carrier vessel or autonomous uninhabited underwater vehicle.

Claims (9)

1. A pulsed electrodynamic emitter containing a sealed housing, an excitation coil, a block of storage capacitors and their charger, as well as an electronic control cabinet, characterized in that the sealed housing is made in the form of separate modules: a sealed emitter module and at least one sealed control module emitter, and the hermetic emitter module is made in the form of an oval cylinder and is provided with a frame made with the possibility of fixing at least one plate and at least one elastic element in it, in turn, equipped with at least one stiffening rib, also the hermetic emitter module equipped with a rigid element, an elastic gasket, an insulator, a sealed shell and the said excitation coil placed in it, made in the form of an excitation winding, and a block of storage capacitors with their charger is located in the sealed emitter control module, the electronic cabinet is controlled ion, made in the form of an automatic control unit for the emitter, the sealed emitter control module is also equipped with a battery pack, the sealed emitter module and the sealed emitter control module are made with the possibility of mounting on a carrier, for example, an autonomous uninhabited underwater vehicle. 2. A pulsed electrodynamic radiator according to claim 1, characterized in that the frame and plate are made of a material with high electrical conductivity. 3. A pulsed electrodynamic radiator according to claim 1, characterized in that the elastic element is made of a polymeric material. 4. Pulsed electrodynamic emitter according to claim 1, characterized in that the rigid element is made of a material with high strength and buoyancy. 5. Pulsed electrodynamic emitter according to claim 1, characterized in that the elastic gasket is made of a polymeric material. 6. Pulsed electrodynamic emitter according to claim 1, characterized in that the excitation winding is made of a cable. 7. Pulsed electrodynamic radiator according to claim 1, characterized in that the insulator is made of insulating material. 8. Pulsed electrodynamic emitter according to claim 1, characterized in that the sealed shell is made of a viscoelastic material. 9. Pulsed electrodynamic emitter according to claim 1, characterized in that the sealed emitter module, made in the form of an oval cylinder, is made in the form of an elliptical cylinder.

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